URL shortener with ability to block bot traffic?

Hey guys. I need a URL shortener that is capable of filtering bot traffic. Just realized that Bitly and Googl allow bot traffic to sip through.

Adfly is the best option but you have to enable ads in order to use their bot filtering system. Otherwise if you disable ads they allow bots to follow your links.

Some bot traffic from Twitter messed up my Adsense. Sasa xmass nitameza mate watu wakikula nyama.